PA12 EMS‑CHEM TR90
PA12 EMS‑CHEM TR90 Resin
Material Introduction: PA12 EMS‑CHEM TR90 is a lightweight high‑performance transparent polyamide belonging to Grilamid TR series based on polyamide 12. It features excellent mechanical properties, outstanding chemical stability, low water‑absorption, good heat‑resistance, safety‑environmental‑protection and compliance, and is widely used in multiple high‑demanding industrial fields.
Main Applications
Optics & eyewear frames: Classic application for TR90, especially for safety glasses, sunglasses and spectacle frames. Light weight, high toughness, impact‑resistance, memory effect (recovery from minor deformation) and brilliant colorability make it preferred material for eyeglass frames.
Packaging industry: Cosmetic packaging, medical packaging, films, benefited from its transparency, chemical stability and food‑contact compliance.
Electronic‑electrical industry: Connectors, lighting components, housings for mobile phones and other portable devices, electrical assemblies, relying on electrical insulation, HB‑grade flame retardancy and mechanical strength.
Automotive industry: Interior parts, fuel delivery tubes, brake hoses, air‑conditioning hoses, pneumatic‑equipment flexible hoses.
Medical & healthcare articles: Available for medical devices, medical packaging and healthcare supplies with biocompatibility certifications such as ISO 10993 and USP Class VI.
Industrial applications: Engineering fittings, pneumatic tubing, hydraulic system components, industrial high‑pressure hydraulic hoses.
Sports goods: Sports equipment and athletic articles.
Performance Parameters
| Performance Category | Test Item | Test Standard | Condition / Status | Typical Value / Range | Unit | Remarks & Interpretation |
|---|---|---|---|---|---|---|
| Basic Physical Properties | Density | ISO 1183 | dry | 1.00 | g/cm³ | Transparent PA12 |
| Water Absorption (24h,23℃) | ISO 62 | dry | 3.0 | % | ‑ | |
| Equilibrium Water Absorption (23℃,50%RH) | ISO 62 | cond. | 1.5 | % | ‑ | |
| Molding Shrinkage (flow direction) | ISO 294‑4,2577 | dry | 0.7 | % | ‑ | |
| Molding Shrinkage (cross‑flow direction) | ISO 294‑4,2577 | dry | 0.8 | % | ‑ | |
| Mechanical Properties | Tensile Strength at Yield | ISO 527‑1/-2 | dry/cond. | 60 | MPa | ‑ |
| Tensile Elongation at Break | ISO 527‑1/-2 | dry/cond. | ＞50 | % | High ductility | |
| Tensile Modulus | ISO 527‑1/-2 | dry/cond. | 1600 | MPa | ‑ | |
| Ball‑Indentation Hardness | ISO 2039‑1 | cond. | 90 | MPa | ‑ | |
| Impact Properties | Charpy Notched Impact Strength (23℃) | ISO 179/1eA | dry | 9 | kJ/m² | ‑ |
| Charpy Notched Impact Strength (23℃) | ISO 179/1eA | cond. | 13 | kJ/m² | Toughness increases after moisture conditioning | |
| Charpy Notched Impact Strength (-30℃) | ISO 179/1eA | dry | 9 | kJ/m² | Low‑temperature impact performance | |
| Charpy Notched Impact Strength (-30℃) | ISO 179/1eA | cond. | 12 | kJ/m² | ‑ | |
| Thermal Properties | Heat‑Distortion Temperature (1.8 MPa) | ISO 75‑1/-2 | dry | 115 | °C | ‑ |
| Heat‑Distortion Temperature (0.45 MPa) | ISO 75‑1/-2 | dry | 135 | °C | ‑ | |
| Glass Transition Temperature (Tg) | ISO 11357‑1/-2 | dry | 155 | °C | ‑ | |
| Long‑term Continuous Service Temperature | ISO 2578 | long term | 80‑100 | °C | ‑ | |
| Short‑term Continuous Service Temperature | Internal standard | short term | 120 | °C | ‑ | |
| Electrical Properties | Volume Resistivity | IEC 60093 | cond. | 1.0E+11 | Ω·cm | ‑ |
| Surface Resistivity | IEC 60093 | cond. | 1.0E+12 | Ω | ‑ | |
| Dielectric Strength | IEC 60243‑1 | cond. | 34 | kV/mm | ‑ | |
| Comparative Tracking Index(CTI) | IEC 60112 | cond. | 600 | V | High tracking‑resistance | |
| Optical Properties | Appearance | ‑ | ‑ | Clear / Transparent | ‑ | Transparent grade |
| Flammability | UL94 Rating (0.8 mm) | IEC 60695‑11‑10 | dry | HB | ‑ | Non‑V‑0 flame‑retardant grade |
Injection Molding Parameters
| Processing Item | Typical Value / Range | Notes & Explanations |
|---|---|---|
| Drying Treatment | ‑ | Critical operation. Material is moisture‑sensitive. Sufficient drying before processing is mandatory, otherwise whitening, yellowing, foaming, silver streaks, brittleness and deteriorated mechanical performance may occur. |
| Drying Temperature | 80‑90 °C | Dehumidifying dryer recommended. Without dehumidifier, produce under sunny weather with ambient humidity below 50%. |
| Drying Time | 3‑6 h | Keep moisture content below 0.1%. |
| Barrel Temperature | ‑ | ‑ |
| Rear zone (feed zone) | 170‑190 °C | ‑ |
| Middle zone | 190‑210 °C | ‑ |
| Front zone | 190‑210 °C | ‑ |
| Nozzle Temperature | ‑ | ‑ |
| Melt Temperature | ~250 °C | If parts remain whitened with sufficient drying, slightly raise barrel temperature for full plasticization. |
| Mold Temperature | 20‑40 °C | Precise mold‑temperature control is important for qualified finished parts. |
| Injection Pressure | ~108 MPa | ‑ |
| Holding Pressure | ‑ | 50%‑80% of injection pressure. |
| Screw Speed | ‑ | Medium speed, avoid shear overheating. |
| Back Pressure | ‑ | Low back‑pressure: 0.5‑1.0 MPa is sufficient. |
Extrusion Process Parameters
| Processing Item | Typical Value / Range | Notes & Explanations |
|---|---|---|
| Drying Treatment | ‑ | Equally critical, same drying requirements as injection molding. |
| Drying Temperature | 80‑90 °C | ‑ |
| Drying Time | 3‑6 h | Moisture content shall be kept below 0.1%. |
| Extruder Temperature Setting | ‑ | Adjust according to specific equipment, products and grades. |
| Zone 1 (feed zone) | ‑ | ‑ |
| Zone 2 (compression zone) | ‑ | ‑ |
| Zone 3 (metering zone) | ‑ | ‑ |
| Adapter / Head Temperature | ‑ | ‑ |
| Die Temperature | ‑ | ‑ |
| Melt Temperature | 190‑250 °C | ‑ |
Disclaimer: All above data is for reference only.
